Art of manufacturing salt.



' P. L. CLIFTON.

ART- OI' HANUFGTURI'G SALT. nrmonlol FILED un. 25,1906.

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@WQ #am P. L. CLIFTON.

ART 0F MANUFACTURING SALT.

APPLICATION FILED APRA 25,1906.

Patented' Nov. 10, 1908.

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'PEARL L. CLIFTON,

COM

or roMERor, oiiio, Assioma 'ro fran PANY, or roMiiiioY, onio, A CORPORATION POMEROY SALT ASSOCIATION OF OHIO.

aar or MANUFAOTU'MNG sAL'r.

Specification o! Lettera Patent.

Patented Nov. 10, 1908.

.innemen aina ma 25,1906. serial No. masas.

To all 'whom it 'may concern:

Be it known that I, PEARL la. CLIFTON, a citizen of the United States, residing at Pomeroy, in the county of Meigs and State of Ohio, have invented certain new and useful Improvements in the Art of Manufacturing1 Salt, of which the following is a speci cation. v

M invention relates to the manufacture of salt from natural salt brine.

The object of my invention is to simplify and cheapen the manufacture of salt and to im rove its quality.

,I- invention consists in the process herein set fdrth and claimed.

In the drawings one manner of utilizing said process: Figure 1 'is a diagrammatic view of a salt mak` ing plant in which my process is adapted to be used, Fig. 2 is a side eleva-tion of the aeratoi. Fi 3 is a vertical section on the line w-- O Fig. 4 showing thepipes in elevation. Fig. 4 is an enlarged longitudinal section of the closed evaporator showinnr the various pipes in full lines, the center being broken away for lack of space.

The process of manufacturing salt from natural salt brine in accordance with my invention may be accomplished by the use of such apparatus as desired, but in order that my V invention may be ully and clearly understood, I refer employing apparatus constructed an( adapted to operate substantially as follows:

'A salt brine tank 1 of any suitable construction but preferably cylindrical in ferm and having an open top and a dischargeoutlet 2 nem-its bottom is adapted to be suplied with natural salt brine. Said salt rine tank is provided with an aeratoi 3 laced therein adjacent to the discharge outet. 2 communicali'ncg with aii` under pressure and is provide with perforations 4 to distribute and thorough-l aerate the brineto oxidize iron therein be ore it is dischargedfrom the salt brine tank.

A heater 5 comprising an open top recep' 'tacle for the brine' through the discharge outlet-2 is arrange near the salt brine tank 1'. This heater' is provid-ed with steam coils 6 distributed therein and adapted to be supplied with steam for the purpose o'i heating brine in which said coils are immersed from ahoutOF F. to about 180 F. to oxidze which serve 'to illustrate i additional iron contained in the brine and to prepare the brine for further treatment; `The brine is conveyed from the heater 5 into a closed evaporator 7 by means ofte. brine tube 8 which extends from near the top of the heater to near the bot-toni of the closed evaporator. The closed evaporator 'l is provided in its lower part witha series of steam coils 9 secured in and communicating with a manifold 10 at one endand 1.1 at the other end and supplied with live steam from any suitable source through steam pipe 1.2 which steam is ada ted to circulate through said series of coi brine to heat the same to a high degree of temperature for the purpose of generating steam from the brine which is -collected in the steam space 13 above the brine by which to heat said brine after it is conveyed from said closed evaporator to Open evaporators and grainers successively, the brine in said open evaporators and grainers beingacted upon simultaneously by steam 4from said closed evaporator, to oxidize iron in the brine, to, gravity of the exhausted through discharge pipe The unevaporated salt brine in evaporator is conveyed into and throuvh a' filter 15 or 16 by pipe 17 where the' oxi ized iron and other ingredients deleterious to the salt-are mechanically separated from the salt brine which is conveyed therefrom' through pipes 184 to open evaporators i'eated by the steam generated from the salt brine in the closed evaporator 7, the saine being conveyed by steam pipe 2O to steam coils 21 immersed in the brine and provided with a suitable discharge outlet through which the condensed steam is exhausted.

The brine in the open evaporators 19 is simiiltaneously heatedand aer'ated to increase the specific ravity of the brine sufficiently to thorough y salt which is centaine therein. It is then conveyed into {rrainers 22 comprising open receptacles which areV supplied with steam coils 23 suspendedl therein above the bottom of each graine'r and which are supplied with steam generated from the brine-m closed evaporator 7 and conveyed by steam pi-e 24 into said graine-rs where it passes through the steam coils 23 and said brine is simultaneously Vheated and aerated suinin'crease the speciic unevaporated brine and to be s which are immersed in the the' closed i 19, where it is and rapidly. precipitate the the Vremaining t-he CII

ciently to precipitate the salt therein, the steam inthe coils condensing and being suit-- ab'ly discharged.

he steam generated in ratpr is housed and carried away through size to prevent the closed evaporator upon the unevapothe closed evapopipes of ample space in the closed evaporator increases the effectiveness and volume of evaporation produced from the salt brine and therefore the lnecessary specific gravity will be more rapmore heat units will be generated in the form of steam 'than otherwise to be distributedto the coils in the open evaporators and grainers and radiated to the brine contained therein.

have shown filters 15 and 16 respectively 'f and prefer to usethem alternately in order may be cleaned While the other is vice versa thus avoiding any interruption in the o eration. If desired,

owever, one filter on y may be used.

The method of treatment of the brine according to my invention improves the quality of the salt by thorough removal of such ingredients as are deleteriousxto the salt and that one at the saine time simplifies antl cheapens the manufacture by economy l in .the use of fuel, saving eected by the utilization of a cheaper grade of fuel and saving in the amount of apparatus required and in the time necessary toobtain the salt from the brine.

in to be generated to be parried to the steam coils of the open Ievapoeconomical for the' reason that the maintaining prbvement over the meth .lng salt in.

ating tanks or grainers, but my process is ing surface in the proper kind an equi ped bollers will producemore heat units wit inrior fuel than with the same amount and b ter quality of fuel consumed under pans,

laces or kettles and radiate the heat units the 4closed evaporator more uniformly and by direct heat. 'Thesteam passing.. through t e'condensation returned to theboilers with i'very slight-'loss of heat in transmission, thus al high-degree ltemperature of fuel or steam feedwater without use o f any to obtain same. i y process is continuous and therefore substantially no loss results. It is an imfresh brine.-

I claim in a spacesuiiciently large eat heat-- the coil is condensed -and' od of manufactur-- grainers which are supplied process consisting in, first, aerating the salt next, heating the salt brine while exposed to the atmosphere; next, subjecting whereby a )ortion of the Water therein is separated t erefrom in the :torni 'of steam and released into a steam space within said closed evaporator above said brine; next, discl'iarging the unevaporated brine into evaporators exposed to the atmosphere; and next, discharging the .steam evaporated. from the brine through steam coils immersed in the brine in 'said evaporators exposed to the atmosphere, substantially as set forth and for the purposes specified.

2. In the art of manufacturing salt, the process consisting in, first, aerating the salt rine; next, heating the brine while exposed to the atmosphere; next, subjecting the brine to a high degree of'temperature in a closed evaporator by the application of steam in coils immersed in said salt brine, whereby a the brine in said evaporators exposed to the atmosphere, substantially as set forth and for the purposes s ecified.

'3..In the arto manufacturing Salt, the process -consisting in, first, aerating the salt rine; next, subjecting the salt brine to a highl degree of temperature in a closed evaporator by the application of steam in -coils immersed in said salt brine, whereby a portion .of the water therein t erefrom in the form of steam and released into a steam space )vithin steam coils immersed in the brine in said evaporators exposed to the atmosphere, sub stantiall'y as set forth and for the-purposes specified.

4. ln the art of manufacturing salt, tle process consisting in, first, aerating the sa t brine next, heating the brine while exposed to the atmosphere to about 180 F.; next, subjecting the brine to a temperature of 212 F., or more,in a closed evaporator, whereb a portion of the water therein is se aratedY therefrom .in the form of steam and) released into a steam space within said closed evaporator, nerr-t, the

unevaporated brine into evaporators exposed y discharglng the steam coils immersed in the brine in said evaporators exposed to the atmosphere, substantially specified. V

5. In the art of manufacturing salt, the process consisting in, rst, heating the brine while exposed tothe atmos here to about as set `forth and for the purposes 180 F.;.next, subjecting the rine to a temperature of 212 F., or more, in a closed 'evaporator whereby a portion of the water atmosphere; and next, dischar ing the steam" evaporated Vfrom the brine t rough steam f coils immersed-in the brine in said evapo-v -rators e e p Itiiallyas set forth and forthe purposes speci- 'to' the atmosphere, substanglnfthe art of manufacturingsalt, the

rocess consisting in, first, aerating the salt rine; next heating the salt brine while exposed to the atmosphere; next, subjecting the salt brine towhigh degee of temperature in a closed evaporator. hyd; e aplplication of steam coils immersed in said sa t therefrom in the form of steam and released into a steam space within said closed evapobrine, whereby a portion of the water thereln is separated rator' above sald brine; next, filtering the unevaporated brine; next, discharging the filtered brine into open eva orators and open grainers successively; an next, subjecting the brine thus exposed to the atmosphere in :said open eva orators and grainers to the action of Vsai stantially specified.

steam simultaneously, sub- PEARL L. CLIFTON.

` Y, H. P. COLLINS,

.JAMES N. Ramsar,

asset forth and vfor the purposes 

